Here you can find all the free questions related with NVIDIA OpenUSD Development (NCP-OUSD) exam. You can also find on this page links to recently updated premium files with which you can practice for actual NVIDIA OpenUSD Development Exam. These premium versions are provided as NCP-OUSD exam practice tests, both as desktop software and browser based application, you can use whatever suits your style. Feel free to try the OpenUSD Development Exam premium files for free, Good luck with your NVIDIA OpenUSD Development Exam.
Question No: 1
You are debugging a stage where a prim is expected to have opinions from a referenced asset, but those opinions are not appearing in the composed scene. Which of the following are logical things to check to troubleshoot this issue?
The first logical checks are the reference target and any variant selections affecting the prim. Option D is correct because if the referenced asset path is wrong, the asset cannot be resolved, or the referenced layer lacks the expected target prim or defaultPrim, the referenced opinions will not appear. NVIDIA's default-prim guidance explains that a reference without a prim path relies on the referenced layer's defaultPrim; without it, the reference can compose as empty. (docs.nvidia.com)
Option C is also correct because variant selections can alter what scene description is composed. NVIDIA's variant-set material explains that variants may change attributes, visibility, activation, or even reference paths; when variants change references or activation, USD recomputes the composed structure. (docs.nvidia.com)
Option A is generally not the right diagnosis because payload arcs are weaker than reference arcs in standard LIVERPS ordering, so they are not the first candidate for overriding a reference at the same site. Option B is unrelated to whether a reference composes; model kind affects organization and traversal, not basic reference resolution. This aligns with Debugging and Troubleshooting Reference, Asset Resolution, defaultPrim, Variant Selections, and Composition Diagnostics.
Question No: 2
MultipleChoice
In a complex scene with multiple composition arcs, Which option best could cause unexpected property values? Select two.
Options
Answer B, DExplanation
Unexpected property values usually come from value resolution, time remapping, or competing authored opinions. NVIDIA's Learn OpenUSD value-resolution guidance explains that OpenUSD determines the final value of a property by looking through the ordered sources that contribute information, from strongest to weakest, and resolving the relevant authored data according to property type. (docs.nvidia.com)
Option B is correct because layer offsets retime animated data across composition arcs such as references, payloads, and sublayers. If an offset or scale is wrong, a time-sampled property can evaluate at an unexpected source time, producing an apparently incorrect value. Option D is correct because multiple layers can author opinions on the same property, and the stronger opinion wins according to composition and value-resolution rules. NVIDIA's strength-ordering guidance emphasizes that LIVERPS and layer-stack ordering determine which opinions are considered strongest. (docs.nvidia.com)
Option A is not a primary cause by itself; connections may affect shader or node-network behavior, but ''too many'' connections does not inherently change USD property resolution. Option C is incorrect because .usda, .usdc, and .usd are storage encodings for layers, not different composition semantics. This aligns with Debugging and Troubleshooting Value Resolution, Layer Offsets, Composition Strength, and Property Stacks.
Question No: 3
MultipleChoice
Another department at your company has provided layer1.usda that has a Sphere Gprim with animated timeValues that translate the sphere along the Y-axis:
You've been given rootLayer.usda that references Sphere from layer1.usda as follows:
#usda 1.0
(
endTimeCode = 60
startTimeCode = 1
)
def Xform "World"
{
def Sphere "Sphere" (
prepend references = @./layer1.usda@
)
{
}
}
For testing purposes, you want to check what Sphere would look like if it was at (0, -5.0, 0) at timeCode = 45. Which of the following changes in rootLayer.usda would place Sphere at -5.0 in the Y-axis at timeCode 45? Note that it is okay if the position of Sphere at other timeCodes is changed. Choose two.
Options
Answer A, CExplanation
At timeCode 45, the referenced animation from layer1.usda interpolates between the samples at 30 and 60. Since the Y values are -5.0 at frame 30 and 5.0 at frame 60, the interpolated local translate at frame 45 is 0.0. Option A works because adding a parent transform on /World at frame 45 contributes an additional Y translation of -5.0; combined with the sphere's interpolated local value of 0.0, the resulting placement is Y = -5.0.
Option C also works because a layer offset retimes animation across a reference. NVIDIA defines a layer offset as an adjustment to time values when composing layers through references, payloads, or sublayers, using offset and scale to retime animated data non-destructively. With offset = 15, the source sample at frame 30 is composed at frame 45, so the referenced sphere evaluates to Y = -5.0 at root time 45. Value resolution accounts for layer offsets and interpolation of time samples.
Option B only changes timeline metadata and does not retime or override the animation. Option D interpolates between -2.5 at frame 30 and -5.0 at frame 60, producing -3.75 at frame 45, not -5.0. This aligns with Composition Reference, Layer Offsets, Time Samples, and Value Resolution.